sounds like you and I are crusing the same roads, and yeah, it's getting tough to find an open piece of road - even the old stand-bys out in the San Bernardino area are just too damn clogged for any real fun. I pretty much do the PCH run every Sat AM - meet some cool people and see a lot of exotic cars, and then stop for some coffee and chat - suprisingly a lot of those ferrari owners like the mustangs.
If you're hitting that area of PCH, have you tried Newport coast road - not very long but a nice, 60 mph road with some smooth curves and a great view of the ocean - just watch for cops and bicyclists when you run into PCH at the bottom. It's a nice sweeping curve with a perfect opportunity to really smoke 'em up!
Even the drive to Vegas sucks now unless you can do it on a weekday - mid day so there are not too many trucks - on the way out there are some good roads that lead off into oblivion (Death Valley), just remember how to get back to the highway.
I'm still looking too my friend - the toll roads (241 & 261) can be good but watch out for cops big time - but when it's clear, it's good running. Of course you pay for it. 73 isn't too good, and the 5 is always crap now. I used to love the drive to SD, but it's an ordeal now.
Santiago Canyon is a GREAT drive as long as you are not stuck behind a crop duster.
Good luck!
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"My Mustang is a hybrid, it burns gas and rubber." - Tubra, from News Forum Homepage
'05 Black GT Auto - Steeda Carbon-fiber CAI w/SCT SF3 tune, CDC sequential turn signals, Saleen HID Headlights, Ford Bullit Axle-backs, Steeda UDPs, Steeda G-Trac Suspension - Stage II, Cragar 610C 18" x 9" & Nitto Extreme 555 255/45ZR18
Looking for places to let pony stretch it's legs in Southern Cali. 
